package com.sg.bluetooth;

import java.util.Set;

import com.sg.property.R;

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class DeviceListActivity extends Activity {
	
	// Return Intent extra
    public static String EXTRA_DEVICE_ADDRESS = "device_address";

	// Member fields
    private BluetoothAdapter mBtAdapter;
    private ArrayAdapter<String> mPairedDevicesArrayAdapter;
    //private ArrayAdapter<String> mNewDevicesArrayAdapter;
    private Button scanButton;
    
    private static final int BLUETOOTH_SETTINGS_REQUEST = 10;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setTitle(R.string.select_device);
        // Setup the window
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.device_list);

        // Set result CANCELED incase the user backs out
        setResult(Activity.RESULT_CANCELED);

        // Initialize the button to perform device discovery
        scanButton = (Button) findViewById(R.id.button_set);
        scanButton.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                //doDiscovery();
                //v.setVisibility(View.GONE);
            	//直接打开系统的蓝牙设置面板
            	Intent intent = new Intent(Settings.ACTION_BLUETOOTH_SETTINGS);
            	startActivityForResult(intent, BLUETOOTH_SETTINGS_REQUEST);
            }
        });

        // Initialize array adapters. One for already paired devices and
        // one for newly discovered devices
        mPairedDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);
        //mNewDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name);

        // Find and set up the ListView for paired devices
        ListView pairedListView = (ListView) findViewById(R.id.paired_devices);
        pairedListView.setAdapter(mPairedDevicesArrayAdapter);
        pairedListView.setOnItemClickListener(mDeviceClickListener);

//        // Find and set up the ListView for newly discovered devices
//        ListView newDevicesListView = (ListView) findViewById(R.id.new_devices);
//        newDevicesListView.setAdapter(mNewDevicesArrayAdapter);
//        newDevicesListView.setOnItemClickListener(mDeviceClickListener);

//        // Register for broadcasts when a device is discovered
//        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
//        this.registerReceiver(mReceiver, filter);
//
//        // Register for broadcasts when discovery has finished
//        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
//        this.registerReceiver(mReceiver, filter);

        // Get the local Bluetooth adapter
        mBtAdapter = BluetoothAdapter.getDefaultAdapter();

        // Get a set of currently paired devices
        Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();

        // If there are paired devices, add each one to the ArrayAdapter
        if (pairedDevices.size() > 0) {
            findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
            for (BluetoothDevice device : pairedDevices) {
                mPairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
            }
        } else {
//            String noDevices = getResources().getText(R.string.none_paired).toString();
//            mPairedDevicesArrayAdapter.add(noDevices);
        	setTitle(R.string.none_paired);
        }
    }
    
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data){
    	super.onActivityResult(requestCode, resultCode, data);
    	switch(requestCode){
    	case BLUETOOTH_SETTINGS_REQUEST:
    		mPairedDevicesArrayAdapter.clear();
            // Get a set of currently paired devices
            Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();

            // If there are paired devices, add each one to the ArrayAdapter
            if (pairedDevices.size() > 0) {
            	setTitle(R.string.select_device);
                findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE);
                for (BluetoothDevice device : pairedDevices) {
                    mPairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
                }
            } else {
//                String noDevices = getResources().getText(R.string.none_paired).toString();
//                mPairedDevicesArrayAdapter.add(noDevices);
            	findViewById(R.id.title_paired_devices).setVisibility(View.GONE);
            	setTitle(R.string.none_paired);
            }
    		break;
    	default:
			break;
    	}
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();

        // Make sure we're not doing discovery anymore
        if (mBtAdapter != null) {
            mBtAdapter.cancelDiscovery();
        }

//        // Unregister broadcast listeners
//        this.unregisterReceiver(mReceiver);
    }

//    /**
//     * Start device discover with the BluetoothAdapter
//     */
//    private void doDiscovery() {
//    	scanButton.setVisibility(View.INVISIBLE);
//    	//clear devices
//    	mNewDevicesArrayAdapter.clear();
//    	
//        // Indicate scanning in the title
//        setProgressBarIndeterminateVisibility(true);
//        setTitle(R.string.scanning);
//
//        // Turn off sub-title for new devices
//        findViewById(R.id.title_new_devices).setVisibility(View.GONE);
//
//        // If we're already discovering, stop it
//        if (mBtAdapter.isDiscovering()) {
//            mBtAdapter.cancelDiscovery();
//        }
//
//        // Request discover from BluetoothAdapter
//        mBtAdapter.startDiscovery();
//    }

    // The on-click listener for all devices in the ListViews
    private OnItemClickListener mDeviceClickListener = new OnItemClickListener() {
        public void onItemClick(AdapterView<?> av, View v, int arg2, long arg3) {
            // Cancel discovery because it's costly and we're about to connect
            mBtAdapter.cancelDiscovery();

            // Get the device MAC address, which is the last 17 chars in the View
            String info = ((TextView) v).getText().toString();
            String address = info.substring(info.length() - 17);

            Log.v("address", address);
            Log.v("address", address);
            // Create the result Intent and include the MAC address
            Intent intent = new Intent();
            intent.putExtra(EXTRA_DEVICE_ADDRESS, address);

            // Set result and finish this Activity
            setResult(Activity.RESULT_OK, intent);
            finish();
        }
    };

//    // The BroadcastReceiver that listens for discovered devices and
//    // changes the title when discovery is finished
//    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
//        @Override
//        public void onReceive(Context context, Intent intent) {
//            String action = intent.getAction();
//
//            // When discovery finds a device
//            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
//                // Get the BluetoothDevice object from the Intent
//                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
//                // If it's already paired, skip it, because it's been listed already
//                if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
//                	// Turn on sub-title for new devices
//                    findViewById(R.id.title_new_devices).setVisibility(View.VISIBLE);
//                    mNewDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
//                }
//            // When discovery is finished, change the Activity title
//            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
//                setProgressBarIndeterminateVisibility(false);
//                setTitle(R.string.select_device);
//                scanButton.setVisibility(View.VISIBLE);
//                if (mNewDevicesArrayAdapter.getCount() == 0) {
//                	Toast.makeText(DeviceListActivity.this, R.string.none_found, Toast.LENGTH_SHORT).show();
//                	if(mPairedDevicesArrayAdapter.getCount() == 0)
//                		setTitle(R.string.none_paired);
//                }
//            }
//        }
//    };
}
